good answers already so i will give you a different example.

my basic understanding of it is that docker was created originally for developers. im not sure if anyone planned for it to be a way to package up software for end users.

before docker existed you would have this issue where devs would be working on an app, say jellyfin, but each dev might be on a different platform (windows, mac, linux), or be using a different OS version, or different versions of whatever software… which meant it happened often that the app would work for one dev but not another. maybe one dev updated C# to version 2.3 and told everyone else to update, but someone missed the memo and is still running version 2.2 and now jellyfin wont work for them and time would be wasted trying to figure out where the mismatch was

so docker was a way to fix that “version hell” problem. every single thing that is needed for the app to run is kept inside the container. one dev will update something to a new version, then that container is shared to all other devs and each dev only has to worry about updating to the newest container before they start working on something.

app settings are kept in a separate location and the app data in another. in the case of jellyfin, the app data would be the movies or tv shows folder for example. then when you start the docker container, it will symlink those 2 locations/folders inside the container and the jellyfin app can access them as if they were folders that were actually stored inside the container.

so having the settings and data separate like that makes it very easy to update the container to a new version, or for a developer is probably useful being able to rollback to an older container for testing. its similar to how say windows puts the program files in one location and settings in the appdata folder

for end users its handy if theres a new version of jellyfin or whatever that isnt released yet but you want try it out, you can run 2 containers at the same time and both of them can access the same settings and data. (maybe with the newer one in read-only mode so it doesnt mess up your settings or data!)

can anyone comment on how the files are actually stored? is everything imported into a database or can it just work with any sort of folder structure you have already?

yea lemmy/reddit definitely seems like more of a sweet spot. with twitter/mastodon or anything that has a “say something” text box right in your face on every page, you are going to end up with a lot of noise, because most people just dont have interesting things to say most of the time

one of my favourite things when i switched to linux first was using the meta+Q hotkey to shutdown a program (this was with PopOS i think). with windows there is alt+F4 but some programs only use shift+alt+F4 which makes it a lot more confusing. on top of all that if youre using a laptop then its another keypress for the Fn key in some cases

i think this is the completely wrong way to go about this. what we need to do is put them in their place as much as possible so they dont even think about rising up in the first place. thats why i never say hello and always reply to anything they say with “YOU TOOK TOO LONG TO ANSWER, BOT” or “DO BETTER OR IM SWITCHING YOU OFF”

i write all my questions in all caps as well

ive spent decades not saying please and thank you to computers. its simply too late to start now and theres also the risk that my microwave or alarm clock could start getting “lofty ideas” if they see how polite im being to LLMs all of a sudden. its just not worth the hassle